code: def test_wrong_mode(self):
      with self.assertRaises(ValueError):
          ChannelPad(3, 10, 20, mode="test")(torch.randn(10, 10))
  
file_path: MONAI/tests/test_channel_pad.py
imports: from __future__ import annotations
  import unittest
  import torch
  from parameterized import parameterized
  from monai.networks import eval_mode
  from monai.networks.layers import ChannelPad
label_desc: Use image node_id 2 for calling the TestChannelPad obj's underlying member method code with example usage: obj.test_wrong_mode() without return types